Tunable Noninteger Flux Quantum of Vortices in Superconducting Strips.
Sign Up to like & getrecommendations! Published in 2022 at "Nano letters"
DOI: 10.1021/acs.nanolett.2c02356
Abstract: Flux quantization has been widely regarded as the hallmark of the macroscopic quantum state of superconductivity. However, practical design of superconductor devices exploiting finite size confinement effects may induce exotic phenomena, including nonquantized vortices. In… read more here.
Keywords: noninteger flux; tunable noninteger; flux; superconducting strips ... See more keywords
The Interplay Between Light Flux, Quantum Efficiency, and Turnover Frequency in Molecular-modified Photoelectrosynthetic Assemblies.
Sign Up to like & getrecommendations! Published in 2019 at "Journal of the American Chemical Society"
DOI: 10.1021/jacs.9b07295
Abstract: We report on the interplay between light absorption, charge transfer, and catalytic activity at molecular-catalyst-modified semiconductor liquid junctions. Factors limiting the overall photoelectrosynthetic transformations are presented in terms of distinct regions of experimental polarization curves,… read more here.
Keywords: interplay light; efficiency turnover; quantum efficiency; light flux ... See more keywords
Execution of stored programs by a rapid single-flux-quantum random-access-memory-embedded bit-serial microprocessor using 50-GHz clock frequency
Sign Up to like & getrecommendations! Published in 2023 at "Applied Physics Letters"
DOI: 10.1063/5.0148273
Abstract: We have demonstrated the execution of several programs stored in an instruction memory by a rapid single-flux-quantum bit-serial 8-bit microprocessor named CORE e2h. We employed a minimal instruction set architecture composed of 13 instructions based… read more here.
Keywords: single flux; rapid single; flux quantum; memory ... See more keywords
Low-power high-speed half-flux-quantum circuits driven by low bias voltages
Sign Up to like & getrecommendations! Published in 2020 at "Superconductor Science and Technology"
DOI: 10.1088/1361-6668/abcaac
Abstract: Half-flux-quantum (HFQ) circuits store and propagate half-flux quanta. The basic circuit element is a 0-π SQUID, which is a superconducting quantum interference device with a conventional Josephson junction (0-junction) and a π-shifted ferromagnetic junction (π-junction).… read more here.
Keywords: half flux; power; bias; junction ... See more keywords
Frequency synchronization of single flux quantum oscillators
Sign Up to like & getrecommendations! Published in 2021 at "Superconductor Science and Technology"
DOI: 10.1088/1361-6668/ac1d96
Abstract: We demonstrate the frequency synchronization of multiple single-flux quantum (SFQ) oscillators with different oscillation frequencies. To synchronize these SFQ oscillators, a common constant bias current is supplied to the SFQ oscillators without any bias resistors.… read more here.
Keywords: sfq oscillators; frequency synchronization; flux quantum;
Readout Circuit Based on Single-Flux-Quantum Logic Circuit for Photon-Number-Resolving SNSPD Array
Sign Up to like & getrecommendations! Published in 2018 at "IEEE Transactions on Applied Superconductivity"
DOI: 10.1109/tasc.2018.2809483
Abstract: A read-out circuit for photon-number-resolving superconducting nanowire single-photon detector (SNSPD) based on the single-flux-quantum (SFQ) circuit was designed and the basic performance of the fabricated circuit was confirmed. The current pulse output from an SNSPD… read more here.
Keywords: voltage; photon; circuit; series ... See more keywords
Research on the Bias Network of Energy-Efficient Single Flux Quantum Circuits
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Transactions on Applied Superconductivity"
DOI: 10.1109/tasc.2019.2910049
Abstract: Superconducting single flux quantum (SFQ) circuits have been shown to offer huge advantages that are ideal for high performance computing applications. These circuits can operate at very high frequencies (tens of GHz) but consume very… read more here.
Keywords: single flux; energy efficient; bias network; network ... See more keywords
qSTA: A Static Timing Analysis Tool for Superconducting Single-Flux-Quantum Circuits
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Transactions on Applied Superconductivity"
DOI: 10.1109/tasc.2020.2970218
Abstract: Superconducting single-flux-quantum (SFQ) technology is a beyond-complementary metal–oxide–semiconductor (CMOS) technology, promising ultrahigh processing speed and low power consumption. A timing analysis tool for SFQ circuits should check circuit timing behavior, including working frequencies and hold… read more here.
Keywords: single flux; superconducting single; tool; timing analysis ... See more keywords
qSSTA: A Statistical Static Timing Analysis Tool for Superconducting Single-Flux-Quantum Circuits
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Transactions on Applied Superconductivity"
DOI: 10.1109/tasc.2020.3005082
Abstract: Superconducting single flux quantum (SFQ) technology is an ultra-high performance and low power technology. The technology, however, lacks many of the design automation tools and capabilities that are commonplace in CMOS technology. This article describes… read more here.
Keywords: single flux; superconducting single; static timing; statistical static ... See more keywords
Postrouting Optimization of the Working Clock Frequency of Single-Flux-Quantum Circuits
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Transactions on Applied Superconductivity"
DOI: 10.1109/tasc.2020.3005584
Abstract: With the emergence of large-scale single-flux-quantum (SFQ) circuits, it is desirable to offload heavy routing tasks to automated electronic design automation (EDA) tools. The unique characteristic of SFQ circuits is that large clock distribution networks… read more here.
Keywords: single flux; frequency; clock; sfq circuits ... See more keywords
QuCTS—Single-Flux Quantum Clock Tree Synthesis
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems"
DOI: 10.1109/tcad.2021.3123141
Abstract: Superconductive rapid single-flux quantum (RSFQ) is an emerging cryogenic technology, promising a significant boost in performance and ultralow power consumption. The operating frequency achieved by RSFQ digital integrated circuits is several orders of magnitude greater… read more here.
Keywords: tree synthesis; single flux; flux quantum; clock tree ... See more keywords